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Starting with the Ryzen 7000 series, AMD began adding low-power IGPs to all of its Ryzen desktop processors. (Before, it was limited to the subset known as the G-series.) But this has been a bittersweet change since its introduction. Cache has been an essential and highly influential part of computers for decades now, and its importance is unquestionable. What is questionable, however, and what has been questioned since the beginning, is how much cache is enough. Some argue that you can never have enough, but this is illogical. More cache means a larger, or in this case, an extra, chip—and that leads to higher costs. Past a certain point, it becomes questionable if the CPU will even be able to use or take advantage of all the cache you have. Testing a processor is arguably one of the most involved processes of any component I review because there are so many things to measure and quantify.
The Ryzen 9 7900X3D has also been crafted for high-performance gaming and creating. Its cache capacity is 140MB, paired with twelve cores, twenty-four threads, and boost speeds up to 5.6GHz. Curious as to what games are struggling to run on PC and also what PCs are struggling to run games? Also, are those affected games also having issues on consoles? There are some tradeoffs to attaining the leading gaming performance, though — some games don’t benefit from the 3D V-Cache, and the chip isn’t as fast in productivity apps as competing Intel chips. The 7950X3D also suffers from many of the pain points we’ve already seen with the fledgling AM5 platform — the motherboard ecosystem is more expensive than Intel’s offerings, and the strict requirement for DDR5 significantly increases costs compared to Intel’s DDR4-friendly platform.Reduced performance in some productivity appsThe cons just weigh too heavy for me to even consider the CPU or the AM5 platform. In terms of power draw, the minimum I recorded for the 13900K is a meager 2.882W, and it could hover around this for hours if you're not using your computer thanks to its energy-efficient hybrid-core design. Meanwhile, the 7950X3D is still slurping up just over eight times as much power as a baseline. If the software detects a certain high level of thread utilisation, however, it will spin up that dormant chiplet and bring it online if its extra core count is needed. This difference is even more telling when it comes to gaming performance. Compared to the 7950X, the 7950X3D performs like it is fully one to two generations ahead of its non-3D V-Cache counterpart with roughly 20% to 25% better gaming performance at 1080p. Likewise, when it comes to the Intel Core i9-13900K, the 7950X3D lands about 16% to 19% faster on average, but some games will perform substantially better, and the 7950X3D is never that far behind the 13900K when it does occasionally lose out.
Having the on-chip integrated graphics present is highly useful for troubleshooting and, if you aren’t going to run games, it can save you from having to buy a display adapter, which cuts costs. The IGP that AMD opted to use on its processors, however, is relatively weak. The last-gen Ryzen 7 5700G has the fastest IGP of any desktop CPU, and while we don’t necessarily need that much performance in every desktop CPU, it’s too bad AMD opted for as weak an IGP as it did. Gaming performance measures how well the processor calculates gaming operations like in-game physics by running several games' integrated benchmark tools like Returnal, Total War: Warhammer III, and F1 2022. In all cases, I run the benchmarks on the lowest graphics settings available at 1080p and using the most powerful graphics card I have available (in this case, an Nvidia RTX 4090) and with 32GB DDR5 RAM to isolate the actual CPU operations I am testing without having to worry about inteference from excessive memory or graphics management.
AMD takes a bite out of Raptor Lake.
The Ryzen 9 7950X3D pretty much matches the 7950X in Blender and Adobe Photoshop and Adobe Premiere tests, though it lags a bit in VRay 5 (though not by that much). Where it really shines though is with HandBrake 1.6. This is one of the creative tests we use where we get to measure it's true real-world performance on a creative workload, especially one that is highly CPU dependent. AMD’s decision to add extra cache to only one of these chips is somewhat unconventional, as the two CCXs will have different performance characteristics as a result, but there’s a logical reason behind it. The added cache chip and its position on top of one of the CCXs introduce power and heat considerations to the CPU that didn’t exist before. The tuned setting did deliver higher performance, but only in the same way you can tune an F1 car to run above tolerances only to explode as it crosses the finish line. I could catch some higher benchmark numbers, but the system was in no way stable. It's simply the best gaming CPU by performance you can buy on the consumer market and that's not likely to change for the rest of this processor generation, at the very least.
However, AMD later retracted this as an internal issue, stating that more information on the release date would be unveiled shortly, but that the official debut month will remain as February. We now know, the release dates are as follows: When trying to come to an overall assessment of these chips' relative performance, it's better to look at the measurable performance gains between chips across different tests. This makes for a much more sensible average when all is said and done than averaging absolute scores where one CPU test with one very large result can badly skew a final average. You also really can't discount the performance-per-watt that you're getting with the Ryzen 9 7950X3D, which is at least twice what you'd get with the Intel Core i9-13900K and about 55% better than the 7950X.My PC runs every game that I play without issues. And with the recent GPU upgrade I'll be happy for another year or so and will upgrade when needed. You can refer to the spec table below to see how the full Ryzen 7000 lineup compares. Note that UK prices weren't included in the press release we received, but we're following up with AMD about this and will add this information if we get it. On the other hand, when a game like Total War: Warhammer III is running, energy efficiency on the 13900K goes right out the window and you start getting power draw above 330W just for the processor. This allows the 13900K to eke out up to 68 more fps than the 7950X3D (or 532 minimum fps for the 13900K to the 7950X3D's 464 minimum fps), but it literally needs almost 2.5 times as much power to accomplish this. You'll also benefit from the advantages of AMD's next-generation 3D V-Cache technology, ensuring minimal latency and further elevating your gaming experience. The AMD Ryzen 9 5900X also offers you great performance at a more affordable rate. Acquire the most cutting-edge AMD hardware with this system, featuring a swift AMD R9 processor paired with a premium X670 motherboard. The remaining components are also of top-notch quality and perfectly matched. With 32GB of DDR5-5600 RAM, there's ample capacity for handling even the most demanding multitasking scenarios. AMD Ryzen 9 7950X3D: Best CPUs UK Editors' Note, March 2, 2023: Some scrutiny by Tom's Hardware scrutiny by Tom's Hardware and online commenters pointed out that our integrated graphics (IGP) testing numbers for the earlier Ryzen 9 7950X chip were unnaturally low; this was likely due to early-driver issues that only became evident with this review of the 7950X3D, and made the 7950X3D's IGP look like a leap forward by comparison. We have retested the Ryzen 9 7950X and updated the numbers in the IGP testing table here and in that original review, and made minor tweaks to this article's intro and IGP Testing section to reflect the new numbers. We'll also be retesting the IGPs on the Ryzen 7 7700 and 7700X in the coming days. The original, fundamental conclusions we made about this chip, though, have not changed.]
The Xbox Game Bar contains a KGL (known good list) of games that it detects when active, thus triggering Game Mode (you can also instruct the game bar to recognize unknown games and/or other applications as games). The driver communicates with the Windows Game Mode feature, which becomes active when the Xbox Game Bar detects a game is running. Finally, the last major difference is the lower TDP on the 7950X3D compared to the 7950X (120W to 125W). This is mostly from the lower frequency on the 3D V-Cache cores (as well as some other optimizations), meaning that the 7950X3D can use less power overall to get the same or better performance.
Testing the AMD Ryzen 9 7950X3D: Cache Writes Checks It Can't Cash
What's also so notable about the 7950X3D is that while Intel's latest processors have been outstanding, that performance is far more a function of just throwing power at the problem, literally, than it is some kind of technological magic behind the scenes. The cache clearly does not help enough to give the Ryzen 9 7950X3D the performance advantage in any other CPU test in our suite. At the same time, its lower TDP and heat limit cause the 7950X3D to operate a bit slower and perform worse in almost every test except that one. The Ryzen 9 7950X is slightly faster in many of these tests, but, considering how much cheaper that chip is at list price, it’s a bit of a no-brainer which is the better value in this scenario. Stress testing tools like Cinebench R23 push the processor to its engineered limits in terms of power use and operating temperature, and I use these to make sure that every chip is pushed to full 100% CPU utilization under load to determine the minimum and maximum amount of power the processor uses (measured in watts) and the minimum and maximum temperature recorded (measured in Celsius). While a higher TDP usually relates to higher performance, the inclusion of the added 3D V-cache means that the processor can access a larger pool of superfast cache memory, which is even more useful when gaming than just throwing raw power at the problem. With its own dedicated extra cache, there are fewer fetch operations to the PC's main memory, so the chip runs more efficiently, and potentially cooler under load. Jan 5th 2023 AMD Confirms Ryzen 9 7950X3D and 7900X3D Feature 3DV Cache on Only One of the Two Chiplets (164)
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